VIOS 구성시 고려할 tuning parameter

--- Ethernet Interface ---

$ chdev -dev ent0 -attr jumbo_frames=yes

$ chdev -l en0 -a mtu=9000

   > vios 및 etherchannel 구성전에 적용할 것!!!

--- vSCSI Interface ---

$ chdev -dev fscsi0 -attr fc_err_recov=fast_fail dyntrk=yes -perm

$ chdev -dev hdisk1 -attr reserve_policy=no_reserve

$ chdev -dev hdisk1 -attr algorithm=round_robin

$ chdev -l hdisk1 -a hcheck_interval=60 -P

# chdev -l vscsi0 -a vscsi_err_recov=fast_fail

# lsdev –Cc adapter | grep fcs | grep –v grep | awk '{print "chdev –l " $1 " –a num_cmd_elems=2048 –P " }'  | sh -x

# lsdev –Cc disk | grep –v hdisk0 | grep –v hdisk1 | awk '{print "chdev –l " $1 " –a queue_depth=20 -P" }' | sh -x

# lsattr -El hdisk2 | grep "hcheck_"

# lspv | awk '{print "chdev -l " $1 " -a hcheck_interval=60 -P " }' | sh -x

--- NPIV Interface ---

# chdev -l vscsi0 -a vscsi_err_recov=fast_fail

# chdev -l vscsi0 -a dyntrk=yes

# lsdev –Cc adapter | grep fcs | grep –v grep | awk '{print "chdev –l " $1 " –a num_cmd_elems=2048 –P " }'  | sh -x

# lsdev –Cc disk | grep –v hdisk0 | grep –v hdisk1 | awk '{print "chdev –l " $1 " –a queue_depth=20 -P" }' | sh -x

--- vios server 10g adapter ---

-> vios 10g adapter

# chdev -l ent0 -a large_send=yes

# chdev -l ent0 -a large_receive=yes

-> vios server SEA 

# chdev -l ent8 -a largesend=1

# chdev -l ent8 -a large_receive=yes

-> vios vlan adapter

# chdev -l ent2 -a min_buf_medium=512 -a max_buf_medium=1024 -a min_buf_large=96 -a max_buf_large=256 -a min_buf_huge=96 -a max_buf_huge=128 -P

--- vios client ---

-> virtual ethernet adapter

# ifconfig en0 largesend

   -> /etc/inittab 에도 추가하여 재부팅시마다 largesend가 적용되도록 할 것

# chdev -l ent0 -a min_buf_medium=512 -a max_buf_medium=1024 -a min_buf_large=96 -a max_buf_large=256 -a min_buf_huge=96 -a max_buf_huge=128 –P

--- lpar 10g adapter ---

# chdev -l ent0 -a large_send=yes

# chdev -l ent0 -a large_receive=yes

--- processor affinity ---

# lssrad -av

--- others ---

# virtual apdatper에서 entstat -d ent0 혹은 netstat -v ent1로 볼때 Packets Dropped / No Resource Error / Hpervisor Failure 오류가 발생하는 경우

    -> chdev -l ent1 -a min_buf_medium=512 -a max_buf_medium=1024 -a min_buf_large=96 -a max_buf_large=256 -a min_buf_huge=96 -a max_buf_huge=128 -P